what名詞性從句用法

1、what當 what 用作連接代詞，引導(dǎo)名詞性從句時，可引導(dǎo)主語從句、表語從句和賓語從句； 它本身在從句中充當主語、賓語或表語。表示“所的（事） ”的意思，相當于“ the thing（s） that； all thateverything that ；等。例如：1）Leave it with me and I ll see what I can do.（what 引導(dǎo)賓語從句并作 do 的賓語 ）2）What you have done might do harm to other people.（what 引導(dǎo)主語從句并在從句中作賓語 ）表示“所的 （人） ”意思，相當于“ the per

2、son that ”等。例如：1）He is not what he used to be . 他已不是從前的他了。（what 引導(dǎo)表語從句并在從句中作表語 ）2）She is no longerwhat she was five years ago.（what 引導(dǎo)表語從句并在從句中作表語 ）一 . 引導(dǎo)主語從句1）What we need is more time.2）What really mattersis that she wore a pair of white shoes.3) What he said at the meeting4) What is most importan

3、t in lifeastonished everybody present.isn t money.二. 引導(dǎo)賓語從句1) People were perhaps more honest a long time ago when life was very different from what it is today.2)People have heard what the President has said; they are waiting to seewhathe will do .(what 分別做動詞 heard 和 see 的賓語 )三. 引導(dǎo)表語從句1) Whether wa

4、ys will be found to stop pollution or not is justwhat worriesthe public .2) That is what I want to tell you.3) .3)The little girl is no longerwhat she used to be .四. 引導(dǎo)同位語從句what he is working on1) They have no idea at all2) You have no idea what I suffered.what 常用來引導(dǎo)名詞性從句，即主語從句，賓語從句，表語從句和同位語從句 .what

5、 在引導(dǎo)名詞性從句時有兩個重要的特點： 一是它在相應(yīng)的名詞性從句中一定有含義，常表示“什么”，“所的” ，“的樣子”等.二是它在相應(yīng)的名詞性從句中一定做成分，而且常做主語，賓語或表語 . 補充：關(guān)系型 what 引導(dǎo)名詞性從句的五種用法一、用法歸納1. 表示“的東西或事情” ：They ve done what they can to help her.他們已經(jīng)盡力幫助了她。What Mary is is the secretary. 瑪麗的職務(wù)是秘書。2. 表示“的人或的樣子” ：He is no longerwhat he was. 他已經(jīng)不是以前的那個樣子。He is what is g

6、enerally called a traitor.他就是人們通常所說的叛徒。Who is it that has made Fredwhat he is now 是誰把弗雷德培養(yǎng)成現(xiàn)在這個樣子的3. 表示“的數(shù)量或數(shù)目” ：Our income is now doublewhat it was ten years ago . 我們現(xiàn)在的收入是 10 年前的兩倍。The number of the students in our school is ten times what it was before liberation.4. 表示“的時間” ：After what seemed lik

7、e hourshe came out with a bitter smile.似乎過了幾個小時他才苦笑著出來。The young girl was too frightened to speak, standing there forwhat seemed likehours . 小女孩嚇得不敢說話，在那兒站了幾個小時。5. 表示“的地方” ：這就是他們稱為鹽湖城的地方。This is what they call Salt Lake Citywhat is now called America.1492 年哥倫布到達了現(xiàn)在所In 1492, Columbus reached 稱的美洲大陸。二

8、、 that當 that 用作連接詞，引導(dǎo)名詞性從句時，可引導(dǎo)主語從句、表語從句、賓語從句和同 位語從句， that 在從句中既不充當任何成分，也無實際意義，僅起著連接句子的作用。一般不可省略（賓 語從句除外） 。若從句置于句子后面，代詞 it 作形式主語。例如：1）It worried her a bitthat her hair was turning grey.（that 引導(dǎo)主語從句 ）2）It is a factthat The Diaoyu Islands are sacred Chinese territory.（that 引導(dǎo)主語從句 ）3）Can you believe （that）in such a rich country there should be so many poor people （that 引導(dǎo)賓語從句 ）4）Tom felt that he knew everybody s business better than they knew it themselves.5）We heard the news that our team had won. （that 引導(dǎo)同位語從句 ）6）Another problem isth